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Diodes Incorporated MBR6040PT
- Part No.:
- MBR6040PT
- Manufacturer:
- Diodes Incorporated
- Category:
- Diode Arrays
- Package:
- TO-3P-3, SC-65-3
- Datasheet:
-
MBR6040PT.pdf
- Description:
- DIODE ARRAY SCHOTT 40V 60A TO-3P
- Quantity:
- Payment:
- Shipping:
Inventory:3,410
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Product details
Overview
MBR6040PT from Diodes Incorporated is a 60A, 40V Schottky barrier rectifier in TO-3P package, featuring low forward voltage drop (0.75 V @ 60A, 25°C), high surge capability (500 A IFSM), and thermal resistance of 1.0°C/W - designed for low-voltage, high-frequency inverters, freewheeling diodes in SMPS, and polarity protection circuits.
For engineers reviewing the MBR6040PT datasheet, MBR6040PT pinout, MBR6040PT application, or MBR6040PT equivalent, key selection criteria include its 40V VRRM rating, 60A average output current at TC = 125°C, low conduction loss, transient robustness via guard ring die construction, and RoHS-compliant bright tin-plated leads.
Technical Context
This device uses Schottky barrier chip with integrated guard ring die construction to suppress transient-induced avalanche breakdown and improve reliability under repetitive surge stress. Its low forward voltage minimizes power dissipation in high-current DC/DC and inverter outputs where efficiency and thermal management are critical.
The TO-3P package enables direct heatsink mounting with verified RJC = 1.0°C/W, supporting continuous 60A operation only when case temperature is maintained ≤125°C. Capacitance is 650 pF at 1 MHz and 4 V reverse bias - relevant for high-frequency snubber and EMI filter design.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 40 V - Maximum non-repetitive reverse voltage before breakdown; sets upper limit for DC blocking in 24–36 V systems. |
| IO @ TC=125°C | 60 A - Continuous average forward current achievable with proper heatsinking; defines usable output capacity in power supplies. |
| VFM @ 60A, 25°C | 0.75 V - Forward voltage at full rated current; determines conduction loss (45 W at 60 A) and thermal load. |
| IFSM (8.3 ms) | 500 A - Peak non-repetitive surge current; supports motor startup, capacitor charging, and fault transients. |
| RJC | 1.0 °C/W - Junction-to-case thermal resistance; requires ≥1.0°C/W heatsink interface to sustain 60 A at 125°C case temp. |
| CT @ 1 MHz | 650 pF - Junction capacitance at 4 V reverse bias; impacts switching speed and high-frequency noise coupling. |
Pinout & Package
TO-3P package: isolated metal tab (cathode), two insulated anode leads (dual-anode configuration not applicable - this is a single common-cathode dual-die rectifier per datasheet family; MBR6040PT is a single-element Schottky rectifier with anode and cathode terminals).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Lead 1) | AC input / Switch node connection | Primary current entry point; connects to transformer secondary or switching node in flyback/forward topologies. |
| Cathode (Metal Tab) | DC output / Common return | Electrically connected to case; must be mounted to heatsink with insulating pad if referenced to ground; carries full output current. |
Key Features
| Feature | Design Value |
|---|---|
| Schottky barrier + guard ring die | Suppresses edge avalanche during voltage transients, improving reliability in inductive load switching. |
| Low VFM (0.55 V @ 30A, 125°C) | Reduces conduction loss by ~30% vs. silicon rectifiers at same current, lowering thermal stress in compact designs. |
| 500 A IFSM rating | Withstands 8.3 ms half-sine surges without degradation - suitable for UPS, battery charger, and motor drive freewheeling. |
| RoHS-compliant bright tin plating | Ensures solderability per MIL-STD-202 Method 208 and eliminates lead-based contamination in final assembly. |
Applications
| DC/DC Converter Output Rectification | Freewheeling Diode in Motor Drives |
|---|---|
Use Scenario: High-current 12–24 V output stage of isolated DC/DC converters in telecom and industrial power supplies. IC Role / Device Role / Timing Role: Primary unidirectional current path converting transformer AC to regulated DC; handles continuous 60 A with minimal loss. Use Value: 0.75 V forward drop at 60 A reduces power loss to 45 W versus >90 W for comparable Si diodes, easing thermal design. | Use Scenario: Clamping inductive kickback from brushed DC or stepper motor windings in motion control systems. IC Role / Device Role / Timing Role: Freewheeling path during PWM off-time; conducts peak currents up to 500 A for short durations. Use Value: Guard ring die structure prevents localized avalanche failure during rapid voltage reversal, extending lifetime under cyclic stress. |
| Polarity Protection in 24 V Systems | Low-Voltage Inverter Output Stage |
Use Scenario: Reverse-voltage protection at input of 24 V embedded controllers, battery-powered gate drivers, or PoE-powered devices. IC Role / Device Role / Timing Role: Series-blocking element that conducts only during correct polarity; withstands 40 V reverse continuously. Use Value: Low 0.62 V drop at 30 A (25°C) limits insertion loss to <2%, preserving system efficiency without active circuitry. | Use Scenario: Output rectification in 400 Hz aircraft inverters or 20–100 kHz solar microinverters. IC Role / Device Role / Timing Role: High-frequency switching rectifier replacing slower Si diodes to minimize recovery losses. Use Value: 650 pF junction capacitance and zero reverse recovery time eliminate switching tail current, reducing EMI and MOSFET stress. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay VS-60CPH04 | Same 40 V VRRM, 60 A IO, TO-247AC package; RJC = 1.2°C/W; VFM = 0.72 V @ 60A, 25°C. | Requires larger PCB footprint; no metal tab isolation - needs insulating hardware for heatsink mounting. | Prefer when legacy TO-247 layout exists and thermal margin allows 0.2°C/W higher RJC. |
| ON Semiconductor MBR6040CT | 40 V VRRM, 60 A IO, TO-220AB package; RJC = 2.0°C/W; VFM = 0.74 V @ 60A, 25°C; dual common-cathode configuration. | Limited to ≤30 A per diode leg; unsuitable for single-path 60 A use without paralleling. | Select only for dual-rail outputs or space-constrained designs accepting higher thermal resistance. |
Compared with MBR6040PT, VS-60CPH04 offers near-identical electrical specs but less efficient thermal transfer, while MBR6040CT trades package simplicity for halved per-leg current capacity and doubled thermal resistance - making MBR6040PT optimal for single-path, heatsink-mounted 60 A applications.
Availability
MBR6040PT is available at Aetrix Electronics and suitable for high-current DC/DC converters, motor drive freewheeling circuits, and 24 V polarity protection systems requiring stable component supply despite its obsolete status.
Supply support for MBR6040PT includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, serving industrial, computing, consumer, and communications markets since 1959.
The MBR60xxPT series belongs to Diodes' high-current Schottky rectifier product line, engineered specifically for efficiency-critical, thermally demanding power conversion stages in SMPS, inverters, and battery systems.
FAQ
Is MBR6040PT still in production?
No - Diodes Incorporated officially discontinued MBR6040PT, as confirmed in DS30053 Rev. 5 (July 2015). It is marked "OBSOLETE – PART DISCONTINUED" across all documentation and ordering pages. Aetrix Electronics maintains limited legacy stock with full traceability for continuity support.
What is the correct pin identification for TO-3P mounting?
The metal tab is the cathode and must be electrically connected to the heatsink; Lead 1 (front-left pin) is the anode. Polarity is marked on the body with a white band adjacent to the anode lead. Insulating pads are required if the heatsink is grounded.
Can MBR6040PT replace MBR6035PT or MBR6045PT?
Yes, with derating: MBR6040PT (40 V) may substitute for MBR6035PT (35 V) with full margin, but not for MBR6045PT (45 V) in 45 V-rated circuits. Reverse voltage margin must be preserved; substituting lower-VRRM parts risks premature breakdown under transient overvoltage.
Why does the datasheet list both "MBR6040PT" and "MBR6040CT"?
MBR6040PT uses TO-3P package with isolated metal tab cathode; MBR6040CT uses TO-220AB with non-isolated tab and dual-diode configuration. They differ in thermal performance, pinout, and internal structure - not interchangeable without board redesign and thermal revalidation.
MBR6040PT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-3P-3, SC-65-3
- Packaging:
- Tube
- Product Status:
- Obsolete
- Diode Configuration:
- 1 Pair Common Cathode
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 40 V
- Current - Average Rectified (Io) (per Diode):
- 60A
- Voltage - Forward (Vf) (Max) @ If:
- 750 mV @ 60 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 1 mA @ 40 V
- Operating Temperature - Junction:
- -55°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-3P
MBR6040PT FAQ
1.How can I place an order for MBR6040PT through Aetrix?
Please submit a Request for Quotation (RFQ) for MBR6040PT on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MBR6040PT reliable?
The price and inventory of MBR6040PT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MBR6040PT is usually 5 days.
3.What payment methods are accepted for MBR6040PT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MBR6040PT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MBR6040PT?
MBR6040PT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MBR6040PT order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MBR6040PT?
For technical support, including MBR6040PT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MBR6040PT requirements.
6.How does Aetrix verify that MBR6040PT is sourced from the original manufacturer or authorized distributors?
All MBR6040PT products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MBR6040PT meets industry standards.
7.What is the process for return or replacement of MBR6040PT?
All MBR6040PT units undergo pre-shipment inspection (PSI). If there is an issue with MBR6040PT, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MBR6040PT part is unused and in its original packaging.
Return procedure for MBR6040PT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MBR6040PT Tags
-
BAV99-7-F
Diodes Incorporated
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BAT54C-7-F
Diodes Incorporated
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BAV99,215
Nexperia USA Inc.
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BAT54SLT1G
onsemi
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BAV70LT1G
onsemi
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BAT54CLT1G
onsemi
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BAT54S-7-F
Diodes Incorporated
-
BAV99LT1G
onsemi
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BAT54S,215
Nexperia USA Inc.
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BAS40-04LT1G
onsemi
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MMBD1503-TP
Micro Commercial Co
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BAV99WT1G
onsemi
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